Window-latch.



.I. 'J. McCORMACK.

WINDOW LATCH.

APPLICATION FILED JUNE :0. 191a.

1,1 98,862. Patented Sept; 19, 1916.

glvwento'o fi KM JOHN J. MQGORMACK, or NEW YORK, 1v. Y.

wmnow-LAroH.

Specification of Letters Patent.

' Patented Sept. 19, 191

I Application filed ane 10, 1916. a Serial No. 102,835..

To all whom it may concern:

Be it known that 1, JOHN J. MoCoRMAoK, a citizenof the UnitedStates,'residing at New York, in the county and State of New York, haveinvented certain new and useful Improvements in Window-Latches, of whichthe following is a full, clear, and exact specification.

This invention relates to sash locks for fastening together the meetingrails of upper and lower window sashes, and has for its object toprovide an automatic lock of improved construction which may be soarranged as to automatically lock when the meeting rails are broughttogether, or so adjusted as to permit the meetingirails to come togetherwithout looking the sashes together.

Another object is to provide improved means for automatically lockingthesashes together when brought into horizontal aline- Y ment, andespecially to improve the-,means for releasing the locking bolt at theproper time. v j

Other objects will appear as the description proceeds. r Y

Theinvention will be first hereinafter described in connection with theaccompanying drawings, which constitute part of this specification, andthen more specifically defined in the claims at the end of thedescription.

In the accompanying drawings, wherein similar reference charactersdesignate corresponding parts throughout the several views: Figure 1 isa vertical section through the lock mounted on the meeting rails ofwindow sashes, showing the bolt retracted and in position to be releasedwhen the meeting rails are brought into horizontal alinement. Fig. 2 isa similar view showing the meeting rails in horizontal alinement and thebolt in looking position. Fig. 3 is a detailed perspective view of thebolt carrying member of the lock, and Fig. 4 is a similar view of thekeeper.

Referring more particularly to the drawings, 1 and 2 designate themeeting rails of the upper and lower sashes, respectively. The boltcarrying member 3 of the lock is suitably fastened to the meeting rail 2of the lower sash, and the bolt 4 extends through a chambered portion 7of said member and is normally arranged in a substantially horizontalposition. The rear end of the bolt 4 projects from the member 3 and isformed with a. handle or knob 5'. The other end or the bolt is roundedor beveled, as at 6 and projects through an opening 12 in an uprightbracket 13 rigidly fastened to the member 3 and arranged substantiallyin line with the meeting edges of the rails 1 and 2.

WVithin the chamber 7 of the member 3, a spring 9 is coiled about thebolt 4 and presses against a pin 8 carried by the bolt for normallyholding said bolt in looking position. The inner end of the bolt hasvertically alined notches 10 and ll formed in its upper and loweriaces,respectively, for engagement with the upper and lower edges of the,opening .12 in the upright bracket 13 when the bolt is retracted lheother end portion of the bolt is provided with similar notches l4; and15 for-engaging the upper and lower edges of an opening 16 in thechambered portion of the member 3 when the notches 10 or 11 are engagedwith the edgesv of the opening .12. As illustrated a in Fig. 1, when thebolt is retracted, :the

handle 5 may be depressed vfor engaging the notch 10 with the upper edgeof the opening 12 and the notch 15 with the lower edge of the opening16, or the handle may be raised for engaging the notch 11 with the loweredge of the opening 12 and the notch 14 with the upper edge of theopening 16.

In either of these positions, the bolt will be held retracted, but whentheinner end of the bolt is raised and the outer or handle carrying endthereof 'is lowered, as shown in solid lines in Fig. 1, said bolt is inposition to be automatically released when the meeting rails of the twosashes are brought into horizontal alinement, while the bolt whenarranged as shown in dotted lines in Fig. 1 will remain in retractedposition when the meeting rails are brought together. It will be foundvery convenient to arrange the bolt in the latter position when thesashes are to be frequently raised or lowered.

The upper end of the bracket 13 is made flat, as at 17 or otherwiseformed as a stop for engaging the top of the window frame when the lowersash is fully raised.

Said bracket 13 is provided with an opening 18 above the opening 12therein, and in said opening 18 a bolt releasing lever 19 is pivoted at20. The outer end of said lever is bent downward, as at 21 to engage theupper face of the bolt, while the inner end of said lever is providedwith a T-shaped head pun 22 projecting beyond the bracket and into thepath of oppositely arranged grooves or ways 26 in the uprightportion-'24; of the keeper 23 which is secured to the meeting rail 1 ofthe upper sash. The groovesor ways 26 terminate at the bottom inshoulders 27, while the upper ends of said grooves are open to receivethe T-shaped head 22 of the lever 19 when the meeting rails are broughttogether, as illustrated'in Fig. 1. hen the meeting rails are movedfully into horizontal alinement, the extremities of the oppositelyextending portions of the T shaped head 22 of the lever 19-Will engagethe shoulders '27 at the bases of the grooves 26 and cause thedownwardly turnedend 21 of said lever to press against the upper face ofthe bolt 4: and release the notch 10 from the upper edge of the opening12 and the notchlofrom the lower edge of the opening 16 thus permittingthe spring 9 to shoot the bolt into an opening 28 in the keeper, asshown in Fig. 2. The central portion of the upper end of the keeper ispreferably rounded or beveled, as at 25, to permit the beveled end 6 ofthe bolt to more easily ridedown to the locking opening 28. Asillustrated, the upright portion of the bracket 13 may project slightlybeyond the meeting rail 2 of the lower sash, and the base portion ofthekeeper 28 be provided with'a notch 29 to provide clearance for thebottom of this projecting upright portion of the bracket.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

-1. In a sash lock, the combination with a spring pressed bolt-having anotch adapted to engage a fixture when the bolt is retracted forretaining the same in that position, of

a keeper having a shoulder, and a lever having a projection to engagesaid shoulder when the meeting rails are brought together forautomatically releasing the bolt.

' In a sash lock, the combination with a spring pressed bolt havingnotches in its upper and lower faces adapted to engagea fixture forretaining the bolt in retracted different parts of a ,fixture forretaining the bolt in retracted position, of a keeper having ashoulder,and a lever intermediately pivoted andshaving one end extending into thepath of the shoulder onthe keeper and its other end adaptedtoengage theupper face ofzthe bolt for automatically releasing said .bolt when; itsupper notch is engagedwith the fixture andthe meeting rails are. broughttogether, the lever being out of range of the ,bolt whenits lowerjnotch-is engaged with thefixture.

.4. In acsashlock, the combination with a spring pressed bolt having anotch .to engage a fixture for holding said bolt in retracted position,of a keeper having oppositely ar- -range d shoulders, and' a lever'having a T- shaped head to engage said shouldersfor revleasing the boltwhen the meeting rails are r brought together.

.In testimony whereof I have signed my nameto this specification.

JOHN J. MOCORMAOK.

Copies of this patent may be obtained 101'. five cents eaeh, by aigi'essing tne -joqmmissioner of Patents,

-washingtgmp c, l

